Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Wash and halve the baby potatoes, and trim the woody ends off the asparagus spears.
In a small mixing bowl, whisk together the extra virgin olive oil, minced garlic, dried rosemary, dried thyme, sea salt, and black pepper.
Place the chicken breast and halved baby potatoes on the prepared baking sheet.
Drizzle half of the herb oil mixture over the chicken breast and toss the potatoes with the remaining half until well coated.
Roast in the center of the oven for 15 minutes.
Remove the pan briefly to add the asparagus spears and squeeze the juice of the half lemon over the chicken and vegetables.
Return the pan to the oven and roast for an additional 10 to 12 minutes, or until the chicken reaches an internal temperature of 165°F and the potatoes are golden and crisp.
Let the chicken rest for 5 minutes before slicing and serving alongside the roasted vegetables.